What are some alternatives?
When comparing Cronly and crontab guru, you can also consider the following products
Healthchecks.io - Monitor your cron jobs and scheduled tasks, get notified when they fail.
EasyCron - Get frustrated with Cron on your server? Hosting limits your Cron use?
Cronitor - Monitor cron jobs, micro-services, daemons and almost anything else, no setup required. Easier cron troubleshooting and no more silent failures.
Posthook - Simple, Robust Job Scheduling For Your Application
PushMon - PushMon is a new kind of cloud-based monitoring system.
corntab - CRONTAB EDITING MADE SIMPLE